lkml.org 
[lkml]   [2014]   [Jun]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectpNFS client behavior confirmation


Dear pnfs developers,

I would like to confirm client behavior which was hurting us for years.

If for some reason the client is unable to connect to a DS, then this DS got blacklisted
and the only way to whitelist it again was client reboot. With RHEL7 (and I believe with
upstream kernel), after 2 mins client 'forgets' about bad DS and uses it again. This
behavior is tested and confirmed during June bakeathon.

Missing bits:

i) it takes client 6 min to fall back to MDS, e.g time between LAYOUTGET and first WRITE to MDS
ii) there are no log entries why client have decided to use MDS

Thanks,
Tigran.


\
 
 \ /
  Last update: 2014-06-11 19:21    [W:0.080 / U:0.340 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site